TSMC confirms current and former employees' data was exposed through a cloud service provider; says its own systems show no sign of intrusion
- Confirmed by TSMC: employee data exposure via a third-party cloud provider, notification under way, no evidence of TSMC system compromise.
- Not confirmed by TSMC: record count, data types, price and the seller's deadline.
- Lesson: HR, payroll and benefits SaaS hold the most sensitive employee data; know which providers hold it and what breach notice terms you have.
- Taiwan News notes other recent Taiwanese incidents: EzTravel (690,000+ customers) and Bank SinoPac (NT$41.76M in unauthorized transfers).
Sources: CNA (Central News Agency, Taiwan): TSMC statement on employee information placed on external websites (Nov 12, 2026) · Taiwan News: TSMC reports leak of employee information (Nov 12, 2026)